root / hw / scsi-disk.c @ da8365db
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/*
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* SCSI Device emulation
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*
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* Copyright (c) 2006 CodeSourcery.
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* Based on code by Fabrice Bellard
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*
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* Written by Paul Brook
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* Modifications:
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* 2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case
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* when the allocation length of CDB is smaller
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* than 36.
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* 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
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* MODE SENSE response.
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*
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* This code is licensed under the LGPL.
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*
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* Note that this file only handles the SCSI architecture model and device
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* commands. Emulation of interface/link layer protocols is handled by
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* the host adapter emulator.
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*/
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//#define DEBUG_SCSI
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#ifdef DEBUG_SCSI
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#define DPRINTF(fmt, ...) \
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do { printf("scsi-disk: " fmt , ## __VA_ARGS__); } while (0) |
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#else
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#define DPRINTF(fmt, ...) do {} while(0) |
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#endif
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "scsi-disk: " fmt , ## __VA_ARGS__); } while (0) |
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#include "qemu-common.h" |
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#include "qemu-error.h" |
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#include "scsi.h" |
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#include "scsi-defs.h" |
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#include "sysemu.h" |
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#include "blockdev.h" |
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#include "block_int.h" |
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#include "dma.h" |
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|
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#ifdef __linux
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#include <scsi/sg.h> |
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#endif
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#define SCSI_DMA_BUF_SIZE 131072 |
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#define SCSI_MAX_INQUIRY_LEN 256 |
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typedef struct SCSIDiskState SCSIDiskState; |
51 |
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typedef struct SCSIDiskReq { |
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SCSIRequest req; |
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/* Both sector and sector_count are in terms of qemu 512 byte blocks. */
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uint64_t sector; |
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uint32_t sector_count; |
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uint32_t buflen; |
58 |
bool started;
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struct iovec iov;
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QEMUIOVector qiov; |
61 |
BlockAcctCookie acct; |
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} SCSIDiskReq; |
63 |
|
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#define SCSI_DISK_F_REMOVABLE 0 |
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#define SCSI_DISK_F_DPOFUA 1 |
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|
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struct SCSIDiskState
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{ |
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SCSIDevice qdev; |
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uint32_t features; |
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bool media_changed;
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bool media_event;
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bool eject_request;
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QEMUBH *bh; |
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char *version;
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char *serial;
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bool tray_open;
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bool tray_locked;
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}; |
80 |
|
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static int scsi_handle_rw_error(SCSIDiskReq *r, int error); |
82 |
|
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static void scsi_free_request(SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
86 |
|
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if (r->iov.iov_base) {
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qemu_vfree(r->iov.iov_base); |
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} |
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} |
91 |
|
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/* Helper function for command completion with sense. */
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static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense) |
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{ |
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DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
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r->req.tag, sense.key, sense.asc, sense.ascq); |
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scsi_req_build_sense(&r->req, sense); |
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scsi_req_complete(&r->req, CHECK_CONDITION); |
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} |
100 |
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/* Cancel a pending data transfer. */
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static void scsi_cancel_io(SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
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DPRINTF("Cancel tag=0x%x\n", req->tag);
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if (r->req.aiocb) {
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bdrv_aio_cancel(r->req.aiocb); |
109 |
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/* This reference was left in by scsi_*_data. We take ownership of
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* it the moment scsi_req_cancel is called, independent of whether
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* bdrv_aio_cancel completes the request or not. */
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scsi_req_unref(&r->req); |
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} |
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r->req.aiocb = NULL;
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} |
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static uint32_t scsi_init_iovec(SCSIDiskReq *r, size_t size)
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{ |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
121 |
|
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if (!r->iov.iov_base) {
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r->buflen = size; |
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r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
125 |
} |
126 |
r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
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qemu_iovec_init_external(&r->qiov, &r->iov, 1);
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return r->qiov.size / 512; |
129 |
} |
130 |
|
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static void scsi_disk_save_request(QEMUFile *f, SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
134 |
|
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qemu_put_be64s(f, &r->sector); |
136 |
qemu_put_be32s(f, &r->sector_count); |
137 |
qemu_put_be32s(f, &r->buflen); |
138 |
if (r->buflen && r->req.cmd.mode == SCSI_XFER_TO_DEV) {
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qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len); |
140 |
} |
141 |
} |
142 |
|
143 |
static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req) |
144 |
{ |
145 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
146 |
|
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qemu_get_be64s(f, &r->sector); |
148 |
qemu_get_be32s(f, &r->sector_count); |
149 |
qemu_get_be32s(f, &r->buflen); |
150 |
if (r->buflen) {
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scsi_init_iovec(r, r->buflen); |
152 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
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qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len); |
154 |
} |
155 |
} |
156 |
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qemu_iovec_init_external(&r->qiov, &r->iov, 1);
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} |
159 |
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static void scsi_flush_complete(void * opaque, int ret) |
161 |
{ |
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SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
164 |
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bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
166 |
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if (ret < 0) { |
168 |
if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
171 |
} |
172 |
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scsi_req_complete(&r->req, GOOD); |
174 |
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done:
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if (!r->req.io_canceled) {
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scsi_req_unref(&r->req); |
178 |
} |
179 |
} |
180 |
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static bool scsi_is_cmd_fua(SCSICommand *cmd) |
182 |
{ |
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switch (cmd->buf[0]) { |
184 |
case READ_10:
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185 |
case READ_12:
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186 |
case READ_16:
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case WRITE_10:
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188 |
case WRITE_12:
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189 |
case WRITE_16:
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return (cmd->buf[1] & 8) != 0; |
191 |
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case VERIFY_10:
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case VERIFY_12:
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case VERIFY_16:
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case WRITE_VERIFY_10:
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case WRITE_VERIFY_12:
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case WRITE_VERIFY_16:
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return true; |
199 |
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case READ_6:
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case WRITE_6:
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default:
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return false; |
204 |
} |
205 |
} |
206 |
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static void scsi_write_do_fua(SCSIDiskReq *r) |
208 |
{ |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
210 |
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if (scsi_is_cmd_fua(&r->req.cmd)) {
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bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
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r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_flush_complete, r); |
214 |
return;
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} |
216 |
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scsi_req_complete(&r->req, GOOD); |
218 |
if (!r->req.io_canceled) {
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scsi_req_unref(&r->req); |
220 |
} |
221 |
} |
222 |
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static void scsi_dma_complete(void *opaque, int ret) |
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{ |
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SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
227 |
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if (r->req.aiocb != NULL) { |
229 |
r->req.aiocb = NULL;
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bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
231 |
} |
232 |
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if (ret < 0) { |
234 |
if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
237 |
} |
238 |
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r->sector += r->sector_count; |
240 |
r->sector_count = 0;
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if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
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scsi_write_do_fua(r); |
243 |
return;
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} else {
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scsi_req_complete(&r->req, GOOD); |
246 |
} |
247 |
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done:
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if (!r->req.io_canceled) {
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scsi_req_unref(&r->req); |
251 |
} |
252 |
} |
253 |
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static void scsi_read_complete(void * opaque, int ret) |
255 |
{ |
256 |
SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
257 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
258 |
int n;
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260 |
if (r->req.aiocb != NULL) { |
261 |
r->req.aiocb = NULL;
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bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
263 |
} |
264 |
|
265 |
if (ret < 0) { |
266 |
if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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268 |
} |
269 |
} |
270 |
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DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
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272 |
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273 |
n = r->qiov.size / 512;
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r->sector += n; |
275 |
r->sector_count -= n; |
276 |
scsi_req_data(&r->req, r->qiov.size); |
277 |
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278 |
done:
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279 |
if (!r->req.io_canceled) {
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280 |
scsi_req_unref(&r->req); |
281 |
} |
282 |
} |
283 |
|
284 |
/* Actually issue a read to the block device. */
|
285 |
static void scsi_do_read(void *opaque, int ret) |
286 |
{ |
287 |
SCSIDiskReq *r = opaque; |
288 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
289 |
uint32_t n; |
290 |
|
291 |
if (r->req.aiocb != NULL) { |
292 |
r->req.aiocb = NULL;
|
293 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
294 |
} |
295 |
|
296 |
if (ret < 0) { |
297 |
if (scsi_handle_rw_error(r, -ret)) {
|
298 |
goto done;
|
299 |
} |
300 |
} |
301 |
|
302 |
if (r->req.io_canceled) {
|
303 |
return;
|
304 |
} |
305 |
|
306 |
/* The request is used as the AIO opaque value, so add a ref. */
|
307 |
scsi_req_ref(&r->req); |
308 |
|
309 |
if (r->req.sg) {
|
310 |
dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_READ); |
311 |
r->req.resid -= r->req.sg->size; |
312 |
r->req.aiocb = dma_bdrv_read(s->qdev.conf.bs, r->req.sg, r->sector, |
313 |
scsi_dma_complete, r); |
314 |
} else {
|
315 |
n = scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); |
316 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ); |
317 |
r->req.aiocb = bdrv_aio_readv(s->qdev.conf.bs, r->sector, &r->qiov, n, |
318 |
scsi_read_complete, r); |
319 |
} |
320 |
|
321 |
done:
|
322 |
if (!r->req.io_canceled) {
|
323 |
scsi_req_unref(&r->req); |
324 |
} |
325 |
} |
326 |
|
327 |
/* Read more data from scsi device into buffer. */
|
328 |
static void scsi_read_data(SCSIRequest *req) |
329 |
{ |
330 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
331 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
332 |
bool first;
|
333 |
|
334 |
if (r->sector_count == (uint32_t)-1) { |
335 |
DPRINTF("Read buf_len=%zd\n", r->iov.iov_len);
|
336 |
r->sector_count = 0;
|
337 |
r->started = true;
|
338 |
scsi_req_data(&r->req, r->iov.iov_len); |
339 |
return;
|
340 |
} |
341 |
DPRINTF("Read sector_count=%d\n", r->sector_count);
|
342 |
if (r->sector_count == 0) { |
343 |
/* This also clears the sense buffer for REQUEST SENSE. */
|
344 |
scsi_req_complete(&r->req, GOOD); |
345 |
return;
|
346 |
} |
347 |
|
348 |
/* No data transfer may already be in progress */
|
349 |
assert(r->req.aiocb == NULL);
|
350 |
|
351 |
/* The request is used as the AIO opaque value, so add a ref. */
|
352 |
scsi_req_ref(&r->req); |
353 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
354 |
DPRINTF("Data transfer direction invalid\n");
|
355 |
scsi_read_complete(r, -EINVAL); |
356 |
return;
|
357 |
} |
358 |
|
359 |
if (s->tray_open) {
|
360 |
scsi_read_complete(r, -ENOMEDIUM); |
361 |
return;
|
362 |
} |
363 |
|
364 |
first = !r->started; |
365 |
r->started = true;
|
366 |
if (first && scsi_is_cmd_fua(&r->req.cmd)) {
|
367 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
368 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_do_read, r); |
369 |
} else {
|
370 |
scsi_do_read(r, 0);
|
371 |
} |
372 |
} |
373 |
|
374 |
/*
|
375 |
* scsi_handle_rw_error has two return values. 0 means that the error
|
376 |
* must be ignored, 1 means that the error has been processed and the
|
377 |
* caller should not do anything else for this request. Note that
|
378 |
* scsi_handle_rw_error always manages its reference counts, independent
|
379 |
* of the return value.
|
380 |
*/
|
381 |
static int scsi_handle_rw_error(SCSIDiskReq *r, int error) |
382 |
{ |
383 |
int is_read = (r->req.cmd.xfer == SCSI_XFER_FROM_DEV);
|
384 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
385 |
BlockErrorAction action = bdrv_get_on_error(s->qdev.conf.bs, is_read); |
386 |
|
387 |
if (action == BLOCK_ERR_IGNORE) {
|
388 |
bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_IGNORE, is_read); |
389 |
return 0; |
390 |
} |
391 |
|
392 |
if ((error == ENOSPC && action == BLOCK_ERR_STOP_ENOSPC)
|
393 |
|| action == BLOCK_ERR_STOP_ANY) { |
394 |
|
395 |
bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_STOP, is_read); |
396 |
vm_stop(RUN_STATE_IO_ERROR); |
397 |
bdrv_iostatus_set_err(s->qdev.conf.bs, error); |
398 |
scsi_req_retry(&r->req); |
399 |
} else {
|
400 |
switch (error) {
|
401 |
case ENOMEDIUM:
|
402 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
403 |
break;
|
404 |
case ENOMEM:
|
405 |
scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE)); |
406 |
break;
|
407 |
case EINVAL:
|
408 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
409 |
break;
|
410 |
default:
|
411 |
scsi_check_condition(r, SENSE_CODE(IO_ERROR)); |
412 |
break;
|
413 |
} |
414 |
bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_REPORT, is_read); |
415 |
} |
416 |
return 1; |
417 |
} |
418 |
|
419 |
static void scsi_write_complete(void * opaque, int ret) |
420 |
{ |
421 |
SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
422 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
423 |
uint32_t n; |
424 |
|
425 |
if (r->req.aiocb != NULL) { |
426 |
r->req.aiocb = NULL;
|
427 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
428 |
} |
429 |
|
430 |
if (ret < 0) { |
431 |
if (scsi_handle_rw_error(r, -ret)) {
|
432 |
goto done;
|
433 |
} |
434 |
} |
435 |
|
436 |
n = r->qiov.size / 512;
|
437 |
r->sector += n; |
438 |
r->sector_count -= n; |
439 |
if (r->sector_count == 0) { |
440 |
scsi_write_do_fua(r); |
441 |
return;
|
442 |
} else {
|
443 |
scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); |
444 |
DPRINTF("Write complete tag=0x%x more=%d\n", r->req.tag, r->qiov.size);
|
445 |
scsi_req_data(&r->req, r->qiov.size); |
446 |
} |
447 |
|
448 |
done:
|
449 |
if (!r->req.io_canceled) {
|
450 |
scsi_req_unref(&r->req); |
451 |
} |
452 |
} |
453 |
|
454 |
static void scsi_write_data(SCSIRequest *req) |
455 |
{ |
456 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
457 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
458 |
uint32_t n; |
459 |
|
460 |
/* No data transfer may already be in progress */
|
461 |
assert(r->req.aiocb == NULL);
|
462 |
|
463 |
/* The request is used as the AIO opaque value, so add a ref. */
|
464 |
scsi_req_ref(&r->req); |
465 |
if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
|
466 |
DPRINTF("Data transfer direction invalid\n");
|
467 |
scsi_write_complete(r, -EINVAL); |
468 |
return;
|
469 |
} |
470 |
|
471 |
if (!r->req.sg && !r->qiov.size) {
|
472 |
/* Called for the first time. Ask the driver to send us more data. */
|
473 |
r->started = true;
|
474 |
scsi_write_complete(r, 0);
|
475 |
return;
|
476 |
} |
477 |
if (s->tray_open) {
|
478 |
scsi_write_complete(r, -ENOMEDIUM); |
479 |
return;
|
480 |
} |
481 |
|
482 |
if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 || |
483 |
r->req.cmd.buf[0] == VERIFY_16) {
|
484 |
if (r->req.sg) {
|
485 |
scsi_dma_complete(r, 0);
|
486 |
} else {
|
487 |
scsi_write_complete(r, 0);
|
488 |
} |
489 |
return;
|
490 |
} |
491 |
|
492 |
if (r->req.sg) {
|
493 |
dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_WRITE); |
494 |
r->req.resid -= r->req.sg->size; |
495 |
r->req.aiocb = dma_bdrv_write(s->qdev.conf.bs, r->req.sg, r->sector, |
496 |
scsi_dma_complete, r); |
497 |
} else {
|
498 |
n = r->qiov.size / 512;
|
499 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE); |
500 |
r->req.aiocb = bdrv_aio_writev(s->qdev.conf.bs, r->sector, &r->qiov, n, |
501 |
scsi_write_complete, r); |
502 |
} |
503 |
} |
504 |
|
505 |
/* Return a pointer to the data buffer. */
|
506 |
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
507 |
{ |
508 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
509 |
|
510 |
return (uint8_t *)r->iov.iov_base;
|
511 |
} |
512 |
|
513 |
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) |
514 |
{ |
515 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
516 |
int buflen = 0; |
517 |
|
518 |
if (req->cmd.buf[1] & 0x2) { |
519 |
/* Command support data - optional, not implemented */
|
520 |
BADF("optional INQUIRY command support request not implemented\n");
|
521 |
return -1; |
522 |
} |
523 |
|
524 |
if (req->cmd.buf[1] & 0x1) { |
525 |
/* Vital product data */
|
526 |
uint8_t page_code = req->cmd.buf[2];
|
527 |
if (req->cmd.xfer < 4) { |
528 |
BADF("Error: Inquiry (EVPD[%02X]) buffer size %zd is "
|
529 |
"less than 4\n", page_code, req->cmd.xfer);
|
530 |
return -1; |
531 |
} |
532 |
|
533 |
outbuf[buflen++] = s->qdev.type & 0x1f;
|
534 |
outbuf[buflen++] = page_code ; // this page
|
535 |
outbuf[buflen++] = 0x00;
|
536 |
|
537 |
switch (page_code) {
|
538 |
case 0x00: /* Supported page codes, mandatory */ |
539 |
{ |
540 |
int pages;
|
541 |
DPRINTF("Inquiry EVPD[Supported pages] "
|
542 |
"buffer size %zd\n", req->cmd.xfer);
|
543 |
pages = buflen++; |
544 |
outbuf[buflen++] = 0x00; // list of supported pages (this page) |
545 |
if (s->serial) {
|
546 |
outbuf[buflen++] = 0x80; // unit serial number |
547 |
} |
548 |
outbuf[buflen++] = 0x83; // device identification |
549 |
if (s->qdev.type == TYPE_DISK) {
|
550 |
outbuf[buflen++] = 0xb0; // block limits |
551 |
outbuf[buflen++] = 0xb2; // thin provisioning |
552 |
} |
553 |
outbuf[pages] = buflen - pages - 1; // number of pages |
554 |
break;
|
555 |
} |
556 |
case 0x80: /* Device serial number, optional */ |
557 |
{ |
558 |
int l;
|
559 |
|
560 |
if (!s->serial) {
|
561 |
DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
|
562 |
return -1; |
563 |
} |
564 |
|
565 |
l = strlen(s->serial); |
566 |
if (l > 20) { |
567 |
l = 20;
|
568 |
} |
569 |
|
570 |
DPRINTF("Inquiry EVPD[Serial number] "
|
571 |
"buffer size %zd\n", req->cmd.xfer);
|
572 |
outbuf[buflen++] = l; |
573 |
memcpy(outbuf+buflen, s->serial, l); |
574 |
buflen += l; |
575 |
break;
|
576 |
} |
577 |
|
578 |
case 0x83: /* Device identification page, mandatory */ |
579 |
{ |
580 |
const char *str = s->serial ?: bdrv_get_device_name(s->qdev.conf.bs); |
581 |
int max_len = s->serial ? 20 : 255 - 8; |
582 |
int id_len = strlen(str);
|
583 |
|
584 |
if (id_len > max_len) {
|
585 |
id_len = max_len; |
586 |
} |
587 |
DPRINTF("Inquiry EVPD[Device identification] "
|
588 |
"buffer size %zd\n", req->cmd.xfer);
|
589 |
|
590 |
outbuf[buflen++] = 4 + id_len;
|
591 |
outbuf[buflen++] = 0x2; // ASCII |
592 |
outbuf[buflen++] = 0; // not officially assigned |
593 |
outbuf[buflen++] = 0; // reserved |
594 |
outbuf[buflen++] = id_len; // length of data following
|
595 |
|
596 |
memcpy(outbuf+buflen, str, id_len); |
597 |
buflen += id_len; |
598 |
break;
|
599 |
} |
600 |
case 0xb0: /* block limits */ |
601 |
{ |
602 |
unsigned int unmap_sectors = |
603 |
s->qdev.conf.discard_granularity / s->qdev.blocksize; |
604 |
unsigned int min_io_size = |
605 |
s->qdev.conf.min_io_size / s->qdev.blocksize; |
606 |
unsigned int opt_io_size = |
607 |
s->qdev.conf.opt_io_size / s->qdev.blocksize; |
608 |
|
609 |
if (s->qdev.type == TYPE_ROM) {
|
610 |
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
|
611 |
page_code); |
612 |
return -1; |
613 |
} |
614 |
/* required VPD size with unmap support */
|
615 |
outbuf[3] = buflen = 0x3c; |
616 |
|
617 |
memset(outbuf + 4, 0, buflen - 4); |
618 |
|
619 |
/* optimal transfer length granularity */
|
620 |
outbuf[6] = (min_io_size >> 8) & 0xff; |
621 |
outbuf[7] = min_io_size & 0xff; |
622 |
|
623 |
/* optimal transfer length */
|
624 |
outbuf[12] = (opt_io_size >> 24) & 0xff; |
625 |
outbuf[13] = (opt_io_size >> 16) & 0xff; |
626 |
outbuf[14] = (opt_io_size >> 8) & 0xff; |
627 |
outbuf[15] = opt_io_size & 0xff; |
628 |
|
629 |
/* optimal unmap granularity */
|
630 |
outbuf[28] = (unmap_sectors >> 24) & 0xff; |
631 |
outbuf[29] = (unmap_sectors >> 16) & 0xff; |
632 |
outbuf[30] = (unmap_sectors >> 8) & 0xff; |
633 |
outbuf[31] = unmap_sectors & 0xff; |
634 |
break;
|
635 |
} |
636 |
case 0xb2: /* thin provisioning */ |
637 |
{ |
638 |
outbuf[3] = buflen = 8; |
639 |
outbuf[4] = 0; |
640 |
outbuf[5] = 0x60; /* write_same 10/16 supported */ |
641 |
outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1; |
642 |
outbuf[7] = 0; |
643 |
break;
|
644 |
} |
645 |
default:
|
646 |
BADF("Error: unsupported Inquiry (EVPD[%02X]) "
|
647 |
"buffer size %zd\n", page_code, req->cmd.xfer);
|
648 |
return -1; |
649 |
} |
650 |
/* done with EVPD */
|
651 |
return buflen;
|
652 |
} |
653 |
|
654 |
/* Standard INQUIRY data */
|
655 |
if (req->cmd.buf[2] != 0) { |
656 |
BADF("Error: Inquiry (STANDARD) page or code "
|
657 |
"is non-zero [%02X]\n", req->cmd.buf[2]); |
658 |
return -1; |
659 |
} |
660 |
|
661 |
/* PAGE CODE == 0 */
|
662 |
if (req->cmd.xfer < 5) { |
663 |
BADF("Error: Inquiry (STANDARD) buffer size %zd "
|
664 |
"is less than 5\n", req->cmd.xfer);
|
665 |
return -1; |
666 |
} |
667 |
|
668 |
buflen = req->cmd.xfer; |
669 |
if (buflen > SCSI_MAX_INQUIRY_LEN) {
|
670 |
buflen = SCSI_MAX_INQUIRY_LEN; |
671 |
} |
672 |
memset(outbuf, 0, buflen);
|
673 |
|
674 |
outbuf[0] = s->qdev.type & 0x1f; |
675 |
outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0; |
676 |
if (s->qdev.type == TYPE_ROM) {
|
677 |
memcpy(&outbuf[16], "QEMU CD-ROM ", 16); |
678 |
} else {
|
679 |
memcpy(&outbuf[16], "QEMU HARDDISK ", 16); |
680 |
} |
681 |
memcpy(&outbuf[8], "QEMU ", 8); |
682 |
memset(&outbuf[32], 0, 4); |
683 |
memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version))); |
684 |
/*
|
685 |
* We claim conformance to SPC-3, which is required for guests
|
686 |
* to ask for modern features like READ CAPACITY(16) or the
|
687 |
* block characteristics VPD page by default. Not all of SPC-3
|
688 |
* is actually implemented, but we're good enough.
|
689 |
*/
|
690 |
outbuf[2] = 5; |
691 |
outbuf[3] = 2; /* Format 2 */ |
692 |
|
693 |
if (buflen > 36) { |
694 |
outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ |
695 |
} else {
|
696 |
/* If the allocation length of CDB is too small,
|
697 |
the additional length is not adjusted */
|
698 |
outbuf[4] = 36 - 5; |
699 |
} |
700 |
|
701 |
/* Sync data transfer and TCQ. */
|
702 |
outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0); |
703 |
return buflen;
|
704 |
} |
705 |
|
706 |
static inline bool media_is_dvd(SCSIDiskState *s) |
707 |
{ |
708 |
uint64_t nb_sectors; |
709 |
if (s->qdev.type != TYPE_ROM) {
|
710 |
return false; |
711 |
} |
712 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
713 |
return false; |
714 |
} |
715 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
716 |
return nb_sectors > CD_MAX_SECTORS;
|
717 |
} |
718 |
|
719 |
static inline bool media_is_cd(SCSIDiskState *s) |
720 |
{ |
721 |
uint64_t nb_sectors; |
722 |
if (s->qdev.type != TYPE_ROM) {
|
723 |
return false; |
724 |
} |
725 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
726 |
return false; |
727 |
} |
728 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
729 |
return nb_sectors <= CD_MAX_SECTORS;
|
730 |
} |
731 |
|
732 |
static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r, |
733 |
uint8_t *outbuf) |
734 |
{ |
735 |
static const int rds_caps_size[5] = { |
736 |
[0] = 2048 + 4, |
737 |
[1] = 4 + 4, |
738 |
[3] = 188 + 4, |
739 |
[4] = 2048 + 4, |
740 |
}; |
741 |
|
742 |
uint8_t media = r->req.cmd.buf[1];
|
743 |
uint8_t layer = r->req.cmd.buf[6];
|
744 |
uint8_t format = r->req.cmd.buf[7];
|
745 |
int size = -1; |
746 |
|
747 |
if (s->qdev.type != TYPE_ROM) {
|
748 |
return -1; |
749 |
} |
750 |
if (media != 0) { |
751 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
752 |
return -1; |
753 |
} |
754 |
|
755 |
if (format != 0xff) { |
756 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
757 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
758 |
return -1; |
759 |
} |
760 |
if (media_is_cd(s)) {
|
761 |
scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT)); |
762 |
return -1; |
763 |
} |
764 |
if (format >= ARRAY_SIZE(rds_caps_size)) {
|
765 |
return -1; |
766 |
} |
767 |
size = rds_caps_size[format]; |
768 |
memset(outbuf, 0, size);
|
769 |
} |
770 |
|
771 |
switch (format) {
|
772 |
case 0x00: { |
773 |
/* Physical format information */
|
774 |
uint64_t nb_sectors; |
775 |
if (layer != 0) { |
776 |
goto fail;
|
777 |
} |
778 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
779 |
|
780 |
outbuf[4] = 1; /* DVD-ROM, part version 1 */ |
781 |
outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ |
782 |
outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ |
783 |
outbuf[7] = 0; /* default densities */ |
784 |
|
785 |
stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */ |
786 |
stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */ |
787 |
break;
|
788 |
} |
789 |
|
790 |
case 0x01: /* DVD copyright information, all zeros */ |
791 |
break;
|
792 |
|
793 |
case 0x03: /* BCA information - invalid field for no BCA info */ |
794 |
return -1; |
795 |
|
796 |
case 0x04: /* DVD disc manufacturing information, all zeros */ |
797 |
break;
|
798 |
|
799 |
case 0xff: { /* List capabilities */ |
800 |
int i;
|
801 |
size = 4;
|
802 |
for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) { |
803 |
if (!rds_caps_size[i]) {
|
804 |
continue;
|
805 |
} |
806 |
outbuf[size] = i; |
807 |
outbuf[size + 1] = 0x40; /* Not writable, readable */ |
808 |
stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
|
809 |
size += 4;
|
810 |
} |
811 |
break;
|
812 |
} |
813 |
|
814 |
default:
|
815 |
return -1; |
816 |
} |
817 |
|
818 |
/* Size of buffer, not including 2 byte size field */
|
819 |
stw_be_p(outbuf, size - 2);
|
820 |
return size;
|
821 |
|
822 |
fail:
|
823 |
return -1; |
824 |
} |
825 |
|
826 |
static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf) |
827 |
{ |
828 |
uint8_t event_code, media_status; |
829 |
|
830 |
media_status = 0;
|
831 |
if (s->tray_open) {
|
832 |
media_status = MS_TRAY_OPEN; |
833 |
} else if (bdrv_is_inserted(s->qdev.conf.bs)) { |
834 |
media_status = MS_MEDIA_PRESENT; |
835 |
} |
836 |
|
837 |
/* Event notification descriptor */
|
838 |
event_code = MEC_NO_CHANGE; |
839 |
if (media_status != MS_TRAY_OPEN) {
|
840 |
if (s->media_event) {
|
841 |
event_code = MEC_NEW_MEDIA; |
842 |
s->media_event = false;
|
843 |
} else if (s->eject_request) { |
844 |
event_code = MEC_EJECT_REQUESTED; |
845 |
s->eject_request = false;
|
846 |
} |
847 |
} |
848 |
|
849 |
outbuf[0] = event_code;
|
850 |
outbuf[1] = media_status;
|
851 |
|
852 |
/* These fields are reserved, just clear them. */
|
853 |
outbuf[2] = 0; |
854 |
outbuf[3] = 0; |
855 |
return 4; |
856 |
} |
857 |
|
858 |
static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r, |
859 |
uint8_t *outbuf) |
860 |
{ |
861 |
int size;
|
862 |
uint8_t *buf = r->req.cmd.buf; |
863 |
uint8_t notification_class_request = buf[4];
|
864 |
if (s->qdev.type != TYPE_ROM) {
|
865 |
return -1; |
866 |
} |
867 |
if ((buf[1] & 1) == 0) { |
868 |
/* asynchronous */
|
869 |
return -1; |
870 |
} |
871 |
|
872 |
size = 4;
|
873 |
outbuf[0] = outbuf[1] = 0; |
874 |
outbuf[3] = 1 << GESN_MEDIA; /* supported events */ |
875 |
if (notification_class_request & (1 << GESN_MEDIA)) { |
876 |
outbuf[2] = GESN_MEDIA;
|
877 |
size += scsi_event_status_media(s, &outbuf[size]); |
878 |
} else {
|
879 |
outbuf[2] = 0x80; |
880 |
} |
881 |
stw_be_p(outbuf, size - 4);
|
882 |
return size;
|
883 |
} |
884 |
|
885 |
static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf) |
886 |
{ |
887 |
int current;
|
888 |
|
889 |
if (s->qdev.type != TYPE_ROM) {
|
890 |
return -1; |
891 |
} |
892 |
current = media_is_dvd(s) ? MMC_PROFILE_DVD_ROM : MMC_PROFILE_CD_ROM; |
893 |
memset(outbuf, 0, 40); |
894 |
stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */ |
895 |
stw_be_p(&outbuf[6], current);
|
896 |
/* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
|
897 |
outbuf[10] = 0x03; /* persistent, current */ |
898 |
outbuf[11] = 8; /* two profiles */ |
899 |
stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
|
900 |
outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
|
901 |
stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
|
902 |
outbuf[18] = (current == MMC_PROFILE_CD_ROM);
|
903 |
/* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
|
904 |
stw_be_p(&outbuf[20], 1); |
905 |
outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */ |
906 |
outbuf[23] = 8; |
907 |
stl_be_p(&outbuf[24], 1); /* SCSI */ |
908 |
outbuf[28] = 1; /* DBE = 1, mandatory */ |
909 |
/* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
|
910 |
stw_be_p(&outbuf[32], 3); |
911 |
outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */ |
912 |
outbuf[35] = 4; |
913 |
outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */ |
914 |
/* TODO: Random readable, CD read, DVD read, drive serial number,
|
915 |
power management */
|
916 |
return 40; |
917 |
} |
918 |
|
919 |
static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf) |
920 |
{ |
921 |
if (s->qdev.type != TYPE_ROM) {
|
922 |
return -1; |
923 |
} |
924 |
memset(outbuf, 0, 8); |
925 |
outbuf[5] = 1; /* CD-ROM */ |
926 |
return 8; |
927 |
} |
928 |
|
929 |
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf, |
930 |
int page_control)
|
931 |
{ |
932 |
static const int mode_sense_valid[0x3f] = { |
933 |
[MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
|
934 |
[MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
|
935 |
[MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
936 |
[MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
937 |
[MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
|
938 |
[MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
|
939 |
}; |
940 |
|
941 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
942 |
int cylinders, heads, secs;
|
943 |
uint8_t *p = *p_outbuf; |
944 |
|
945 |
if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) { |
946 |
return -1; |
947 |
} |
948 |
|
949 |
p[0] = page;
|
950 |
|
951 |
/*
|
952 |
* If Changeable Values are requested, a mask denoting those mode parameters
|
953 |
* that are changeable shall be returned. As we currently don't support
|
954 |
* parameter changes via MODE_SELECT all bits are returned set to zero.
|
955 |
* The buffer was already menset to zero by the caller of this function.
|
956 |
*/
|
957 |
switch (page) {
|
958 |
case MODE_PAGE_HD_GEOMETRY:
|
959 |
p[1] = 0x16; |
960 |
if (page_control == 1) { /* Changeable Values */ |
961 |
break;
|
962 |
} |
963 |
/* if a geometry hint is available, use it */
|
964 |
bdrv_guess_geometry(bdrv, &cylinders, &heads, &secs); |
965 |
p[2] = (cylinders >> 16) & 0xff; |
966 |
p[3] = (cylinders >> 8) & 0xff; |
967 |
p[4] = cylinders & 0xff; |
968 |
p[5] = heads & 0xff; |
969 |
/* Write precomp start cylinder, disabled */
|
970 |
p[6] = (cylinders >> 16) & 0xff; |
971 |
p[7] = (cylinders >> 8) & 0xff; |
972 |
p[8] = cylinders & 0xff; |
973 |
/* Reduced current start cylinder, disabled */
|
974 |
p[9] = (cylinders >> 16) & 0xff; |
975 |
p[10] = (cylinders >> 8) & 0xff; |
976 |
p[11] = cylinders & 0xff; |
977 |
/* Device step rate [ns], 200ns */
|
978 |
p[12] = 0; |
979 |
p[13] = 200; |
980 |
/* Landing zone cylinder */
|
981 |
p[14] = 0xff; |
982 |
p[15] = 0xff; |
983 |
p[16] = 0xff; |
984 |
/* Medium rotation rate [rpm], 5400 rpm */
|
985 |
p[20] = (5400 >> 8) & 0xff; |
986 |
p[21] = 5400 & 0xff; |
987 |
break;
|
988 |
|
989 |
case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
|
990 |
p[1] = 0x1e; |
991 |
if (page_control == 1) { /* Changeable Values */ |
992 |
break;
|
993 |
} |
994 |
/* Transfer rate [kbit/s], 5Mbit/s */
|
995 |
p[2] = 5000 >> 8; |
996 |
p[3] = 5000 & 0xff; |
997 |
/* if a geometry hint is available, use it */
|
998 |
bdrv_guess_geometry(bdrv, &cylinders, &heads, &secs); |
999 |
p[4] = heads & 0xff; |
1000 |
p[5] = secs & 0xff; |
1001 |
p[6] = s->qdev.blocksize >> 8; |
1002 |
p[8] = (cylinders >> 8) & 0xff; |
1003 |
p[9] = cylinders & 0xff; |
1004 |
/* Write precomp start cylinder, disabled */
|
1005 |
p[10] = (cylinders >> 8) & 0xff; |
1006 |
p[11] = cylinders & 0xff; |
1007 |
/* Reduced current start cylinder, disabled */
|
1008 |
p[12] = (cylinders >> 8) & 0xff; |
1009 |
p[13] = cylinders & 0xff; |
1010 |
/* Device step rate [100us], 100us */
|
1011 |
p[14] = 0; |
1012 |
p[15] = 1; |
1013 |
/* Device step pulse width [us], 1us */
|
1014 |
p[16] = 1; |
1015 |
/* Device head settle delay [100us], 100us */
|
1016 |
p[17] = 0; |
1017 |
p[18] = 1; |
1018 |
/* Motor on delay [0.1s], 0.1s */
|
1019 |
p[19] = 1; |
1020 |
/* Motor off delay [0.1s], 0.1s */
|
1021 |
p[20] = 1; |
1022 |
/* Medium rotation rate [rpm], 5400 rpm */
|
1023 |
p[28] = (5400 >> 8) & 0xff; |
1024 |
p[29] = 5400 & 0xff; |
1025 |
break;
|
1026 |
|
1027 |
case MODE_PAGE_CACHING:
|
1028 |
p[0] = 8; |
1029 |
p[1] = 0x12; |
1030 |
if (page_control == 1) { /* Changeable Values */ |
1031 |
break;
|
1032 |
} |
1033 |
if (bdrv_enable_write_cache(s->qdev.conf.bs)) {
|
1034 |
p[2] = 4; /* WCE */ |
1035 |
} |
1036 |
break;
|
1037 |
|
1038 |
case MODE_PAGE_R_W_ERROR:
|
1039 |
p[1] = 10; |
1040 |
p[2] = 0x80; /* Automatic Write Reallocation Enabled */ |
1041 |
if (s->qdev.type == TYPE_ROM) {
|
1042 |
p[3] = 0x20; /* Read Retry Count */ |
1043 |
} |
1044 |
break;
|
1045 |
|
1046 |
case MODE_PAGE_AUDIO_CTL:
|
1047 |
p[1] = 14; |
1048 |
break;
|
1049 |
|
1050 |
case MODE_PAGE_CAPABILITIES:
|
1051 |
p[1] = 0x14; |
1052 |
if (page_control == 1) { /* Changeable Values */ |
1053 |
break;
|
1054 |
} |
1055 |
|
1056 |
p[2] = 0x3b; /* CD-R & CD-RW read */ |
1057 |
p[3] = 0; /* Writing not supported */ |
1058 |
p[4] = 0x7f; /* Audio, composite, digital out, |
1059 |
mode 2 form 1&2, multi session */
|
1060 |
p[5] = 0xff; /* CD DA, DA accurate, RW supported, |
1061 |
RW corrected, C2 errors, ISRC,
|
1062 |
UPC, Bar code */
|
1063 |
p[6] = 0x2d | (s->tray_locked ? 2 : 0); |
1064 |
/* Locking supported, jumper present, eject, tray */
|
1065 |
p[7] = 0; /* no volume & mute control, no |
1066 |
changer */
|
1067 |
p[8] = (50 * 176) >> 8; /* 50x read speed */ |
1068 |
p[9] = (50 * 176) & 0xff; |
1069 |
p[10] = 2 >> 8; /* Two volume levels */ |
1070 |
p[11] = 2 & 0xff; |
1071 |
p[12] = 2048 >> 8; /* 2M buffer */ |
1072 |
p[13] = 2048 & 0xff; |
1073 |
p[14] = (16 * 176) >> 8; /* 16x read speed current */ |
1074 |
p[15] = (16 * 176) & 0xff; |
1075 |
p[18] = (16 * 176) >> 8; /* 16x write speed */ |
1076 |
p[19] = (16 * 176) & 0xff; |
1077 |
p[20] = (16 * 176) >> 8; /* 16x write speed current */ |
1078 |
p[21] = (16 * 176) & 0xff; |
1079 |
break;
|
1080 |
|
1081 |
default:
|
1082 |
return -1; |
1083 |
} |
1084 |
|
1085 |
*p_outbuf += p[1] + 2; |
1086 |
return p[1] + 2; |
1087 |
} |
1088 |
|
1089 |
static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf) |
1090 |
{ |
1091 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1092 |
uint64_t nb_sectors; |
1093 |
bool dbd;
|
1094 |
int page, buflen, ret, page_control;
|
1095 |
uint8_t *p; |
1096 |
uint8_t dev_specific_param; |
1097 |
|
1098 |
dbd = (r->req.cmd.buf[1] & 0x8) != 0; |
1099 |
page = r->req.cmd.buf[2] & 0x3f; |
1100 |
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6; |
1101 |
DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
|
1102 |
(r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control); |
1103 |
memset(outbuf, 0, r->req.cmd.xfer);
|
1104 |
p = outbuf; |
1105 |
|
1106 |
if (s->qdev.type == TYPE_DISK) {
|
1107 |
dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0; |
1108 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
1109 |
dev_specific_param |= 0x80; /* Readonly. */ |
1110 |
} |
1111 |
} else {
|
1112 |
/* MMC prescribes that CD/DVD drives have no block descriptors,
|
1113 |
* and defines no device-specific parameter. */
|
1114 |
dev_specific_param = 0x00;
|
1115 |
dbd = true;
|
1116 |
} |
1117 |
|
1118 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1119 |
p[1] = 0; /* Default media type. */ |
1120 |
p[2] = dev_specific_param;
|
1121 |
p[3] = 0; /* Block descriptor length. */ |
1122 |
p += 4;
|
1123 |
} else { /* MODE_SENSE_10 */ |
1124 |
p[2] = 0; /* Default media type. */ |
1125 |
p[3] = dev_specific_param;
|
1126 |
p[6] = p[7] = 0; /* Block descriptor length. */ |
1127 |
p += 8;
|
1128 |
} |
1129 |
|
1130 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1131 |
if (!dbd && nb_sectors) {
|
1132 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1133 |
outbuf[3] = 8; /* Block descriptor length */ |
1134 |
} else { /* MODE_SENSE_10 */ |
1135 |
outbuf[7] = 8; /* Block descriptor length */ |
1136 |
} |
1137 |
nb_sectors /= (s->qdev.blocksize / 512);
|
1138 |
if (nb_sectors > 0xffffff) { |
1139 |
nb_sectors = 0;
|
1140 |
} |
1141 |
p[0] = 0; /* media density code */ |
1142 |
p[1] = (nb_sectors >> 16) & 0xff; |
1143 |
p[2] = (nb_sectors >> 8) & 0xff; |
1144 |
p[3] = nb_sectors & 0xff; |
1145 |
p[4] = 0; /* reserved */ |
1146 |
p[5] = 0; /* bytes 5-7 are the sector size in bytes */ |
1147 |
p[6] = s->qdev.blocksize >> 8; |
1148 |
p[7] = 0; |
1149 |
p += 8;
|
1150 |
} |
1151 |
|
1152 |
if (page_control == 3) { |
1153 |
/* Saved Values */
|
1154 |
scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED)); |
1155 |
return -1; |
1156 |
} |
1157 |
|
1158 |
if (page == 0x3f) { |
1159 |
for (page = 0; page <= 0x3e; page++) { |
1160 |
mode_sense_page(s, page, &p, page_control); |
1161 |
} |
1162 |
} else {
|
1163 |
ret = mode_sense_page(s, page, &p, page_control); |
1164 |
if (ret == -1) { |
1165 |
return -1; |
1166 |
} |
1167 |
} |
1168 |
|
1169 |
buflen = p - outbuf; |
1170 |
/*
|
1171 |
* The mode data length field specifies the length in bytes of the
|
1172 |
* following data that is available to be transferred. The mode data
|
1173 |
* length does not include itself.
|
1174 |
*/
|
1175 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1176 |
outbuf[0] = buflen - 1; |
1177 |
} else { /* MODE_SENSE_10 */ |
1178 |
outbuf[0] = ((buflen - 2) >> 8) & 0xff; |
1179 |
outbuf[1] = (buflen - 2) & 0xff; |
1180 |
} |
1181 |
return buflen;
|
1182 |
} |
1183 |
|
1184 |
static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf) |
1185 |
{ |
1186 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1187 |
int start_track, format, msf, toclen;
|
1188 |
uint64_t nb_sectors; |
1189 |
|
1190 |
msf = req->cmd.buf[1] & 2; |
1191 |
format = req->cmd.buf[2] & 0xf; |
1192 |
start_track = req->cmd.buf[6];
|
1193 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1194 |
DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
1195 |
nb_sectors /= s->qdev.blocksize / 512;
|
1196 |
switch (format) {
|
1197 |
case 0: |
1198 |
toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
1199 |
break;
|
1200 |
case 1: |
1201 |
/* multi session : only a single session defined */
|
1202 |
toclen = 12;
|
1203 |
memset(outbuf, 0, 12); |
1204 |
outbuf[1] = 0x0a; |
1205 |
outbuf[2] = 0x01; |
1206 |
outbuf[3] = 0x01; |
1207 |
break;
|
1208 |
case 2: |
1209 |
toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
1210 |
break;
|
1211 |
default:
|
1212 |
return -1; |
1213 |
} |
1214 |
return toclen;
|
1215 |
} |
1216 |
|
1217 |
static int scsi_disk_emulate_start_stop(SCSIDiskReq *r) |
1218 |
{ |
1219 |
SCSIRequest *req = &r->req; |
1220 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1221 |
bool start = req->cmd.buf[4] & 1; |
1222 |
bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */ |
1223 |
|
1224 |
if (s->qdev.type == TYPE_ROM && loej) {
|
1225 |
if (!start && !s->tray_open && s->tray_locked) {
|
1226 |
scsi_check_condition(r, |
1227 |
bdrv_is_inserted(s->qdev.conf.bs) |
1228 |
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED) |
1229 |
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED)); |
1230 |
return -1; |
1231 |
} |
1232 |
|
1233 |
if (s->tray_open != !start) {
|
1234 |
bdrv_eject(s->qdev.conf.bs, !start); |
1235 |
s->tray_open = !start; |
1236 |
} |
1237 |
} |
1238 |
return 0; |
1239 |
} |
1240 |
|
1241 |
static int scsi_disk_emulate_command(SCSIDiskReq *r) |
1242 |
{ |
1243 |
SCSIRequest *req = &r->req; |
1244 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1245 |
uint64_t nb_sectors; |
1246 |
uint8_t *outbuf; |
1247 |
int buflen = 0; |
1248 |
|
1249 |
if (!r->iov.iov_base) {
|
1250 |
/*
|
1251 |
* FIXME: we shouldn't return anything bigger than 4k, but the code
|
1252 |
* requires the buffer to be as big as req->cmd.xfer in several
|
1253 |
* places. So, do not allow CDBs with a very large ALLOCATION
|
1254 |
* LENGTH. The real fix would be to modify scsi_read_data and
|
1255 |
* dma_buf_read, so that they return data beyond the buflen
|
1256 |
* as all zeros.
|
1257 |
*/
|
1258 |
if (req->cmd.xfer > 65536) { |
1259 |
goto illegal_request;
|
1260 |
} |
1261 |
r->buflen = MAX(4096, req->cmd.xfer);
|
1262 |
r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
1263 |
} |
1264 |
|
1265 |
outbuf = r->iov.iov_base; |
1266 |
switch (req->cmd.buf[0]) { |
1267 |
case TEST_UNIT_READY:
|
1268 |
assert(!s->tray_open && bdrv_is_inserted(s->qdev.conf.bs)); |
1269 |
break;
|
1270 |
case INQUIRY:
|
1271 |
buflen = scsi_disk_emulate_inquiry(req, outbuf); |
1272 |
if (buflen < 0) { |
1273 |
goto illegal_request;
|
1274 |
} |
1275 |
break;
|
1276 |
case MODE_SENSE:
|
1277 |
case MODE_SENSE_10:
|
1278 |
buflen = scsi_disk_emulate_mode_sense(r, outbuf); |
1279 |
if (buflen < 0) { |
1280 |
goto illegal_request;
|
1281 |
} |
1282 |
break;
|
1283 |
case READ_TOC:
|
1284 |
buflen = scsi_disk_emulate_read_toc(req, outbuf); |
1285 |
if (buflen < 0) { |
1286 |
goto illegal_request;
|
1287 |
} |
1288 |
break;
|
1289 |
case RESERVE:
|
1290 |
if (req->cmd.buf[1] & 1) { |
1291 |
goto illegal_request;
|
1292 |
} |
1293 |
break;
|
1294 |
case RESERVE_10:
|
1295 |
if (req->cmd.buf[1] & 3) { |
1296 |
goto illegal_request;
|
1297 |
} |
1298 |
break;
|
1299 |
case RELEASE:
|
1300 |
if (req->cmd.buf[1] & 1) { |
1301 |
goto illegal_request;
|
1302 |
} |
1303 |
break;
|
1304 |
case RELEASE_10:
|
1305 |
if (req->cmd.buf[1] & 3) { |
1306 |
goto illegal_request;
|
1307 |
} |
1308 |
break;
|
1309 |
case START_STOP:
|
1310 |
if (scsi_disk_emulate_start_stop(r) < 0) { |
1311 |
return -1; |
1312 |
} |
1313 |
break;
|
1314 |
case ALLOW_MEDIUM_REMOVAL:
|
1315 |
s->tray_locked = req->cmd.buf[4] & 1; |
1316 |
bdrv_lock_medium(s->qdev.conf.bs, req->cmd.buf[4] & 1); |
1317 |
break;
|
1318 |
case READ_CAPACITY_10:
|
1319 |
/* The normal LEN field for this command is zero. */
|
1320 |
memset(outbuf, 0, 8); |
1321 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1322 |
if (!nb_sectors) {
|
1323 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1324 |
return -1; |
1325 |
} |
1326 |
if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) { |
1327 |
goto illegal_request;
|
1328 |
} |
1329 |
nb_sectors /= s->qdev.blocksize / 512;
|
1330 |
/* Returned value is the address of the last sector. */
|
1331 |
nb_sectors--; |
1332 |
/* Remember the new size for read/write sanity checking. */
|
1333 |
s->qdev.max_lba = nb_sectors; |
1334 |
/* Clip to 2TB, instead of returning capacity modulo 2TB. */
|
1335 |
if (nb_sectors > UINT32_MAX) {
|
1336 |
nb_sectors = UINT32_MAX; |
1337 |
} |
1338 |
outbuf[0] = (nb_sectors >> 24) & 0xff; |
1339 |
outbuf[1] = (nb_sectors >> 16) & 0xff; |
1340 |
outbuf[2] = (nb_sectors >> 8) & 0xff; |
1341 |
outbuf[3] = nb_sectors & 0xff; |
1342 |
outbuf[4] = 0; |
1343 |
outbuf[5] = 0; |
1344 |
outbuf[6] = s->qdev.blocksize >> 8; |
1345 |
outbuf[7] = 0; |
1346 |
buflen = 8;
|
1347 |
break;
|
1348 |
case REQUEST_SENSE:
|
1349 |
/* Just return "NO SENSE". */
|
1350 |
buflen = scsi_build_sense(NULL, 0, outbuf, r->buflen, |
1351 |
(req->cmd.buf[1] & 1) == 0); |
1352 |
break;
|
1353 |
case MECHANISM_STATUS:
|
1354 |
buflen = scsi_emulate_mechanism_status(s, outbuf); |
1355 |
if (buflen < 0) { |
1356 |
goto illegal_request;
|
1357 |
} |
1358 |
break;
|
1359 |
case GET_CONFIGURATION:
|
1360 |
buflen = scsi_get_configuration(s, outbuf); |
1361 |
if (buflen < 0) { |
1362 |
goto illegal_request;
|
1363 |
} |
1364 |
break;
|
1365 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1366 |
buflen = scsi_get_event_status_notification(s, r, outbuf); |
1367 |
if (buflen < 0) { |
1368 |
goto illegal_request;
|
1369 |
} |
1370 |
break;
|
1371 |
case READ_DVD_STRUCTURE:
|
1372 |
buflen = scsi_read_dvd_structure(s, r, outbuf); |
1373 |
if (buflen < 0) { |
1374 |
goto illegal_request;
|
1375 |
} |
1376 |
break;
|
1377 |
case SERVICE_ACTION_IN_16:
|
1378 |
/* Service Action In subcommands. */
|
1379 |
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { |
1380 |
DPRINTF("SAI READ CAPACITY(16)\n");
|
1381 |
memset(outbuf, 0, req->cmd.xfer);
|
1382 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1383 |
if (!nb_sectors) {
|
1384 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1385 |
return -1; |
1386 |
} |
1387 |
if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) { |
1388 |
goto illegal_request;
|
1389 |
} |
1390 |
nb_sectors /= s->qdev.blocksize / 512;
|
1391 |
/* Returned value is the address of the last sector. */
|
1392 |
nb_sectors--; |
1393 |
/* Remember the new size for read/write sanity checking. */
|
1394 |
s->qdev.max_lba = nb_sectors; |
1395 |
outbuf[0] = (nb_sectors >> 56) & 0xff; |
1396 |
outbuf[1] = (nb_sectors >> 48) & 0xff; |
1397 |
outbuf[2] = (nb_sectors >> 40) & 0xff; |
1398 |
outbuf[3] = (nb_sectors >> 32) & 0xff; |
1399 |
outbuf[4] = (nb_sectors >> 24) & 0xff; |
1400 |
outbuf[5] = (nb_sectors >> 16) & 0xff; |
1401 |
outbuf[6] = (nb_sectors >> 8) & 0xff; |
1402 |
outbuf[7] = nb_sectors & 0xff; |
1403 |
outbuf[8] = 0; |
1404 |
outbuf[9] = 0; |
1405 |
outbuf[10] = s->qdev.blocksize >> 8; |
1406 |
outbuf[11] = 0; |
1407 |
outbuf[12] = 0; |
1408 |
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
|
1409 |
|
1410 |
/* set TPE bit if the format supports discard */
|
1411 |
if (s->qdev.conf.discard_granularity) {
|
1412 |
outbuf[14] = 0x80; |
1413 |
} |
1414 |
|
1415 |
/* Protection, exponent and lowest lba field left blank. */
|
1416 |
buflen = req->cmd.xfer; |
1417 |
break;
|
1418 |
} |
1419 |
DPRINTF("Unsupported Service Action In\n");
|
1420 |
goto illegal_request;
|
1421 |
default:
|
1422 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1423 |
return -1; |
1424 |
} |
1425 |
buflen = MIN(buflen, req->cmd.xfer); |
1426 |
return buflen;
|
1427 |
|
1428 |
illegal_request:
|
1429 |
if (r->req.status == -1) { |
1430 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1431 |
} |
1432 |
return -1; |
1433 |
} |
1434 |
|
1435 |
/* Execute a scsi command. Returns the length of the data expected by the
|
1436 |
command. This will be Positive for data transfers from the device
|
1437 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
1438 |
and zero if the command does not transfer any data. */
|
1439 |
|
1440 |
static int32_t scsi_send_command(SCSIRequest *req, uint8_t *buf)
|
1441 |
{ |
1442 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1443 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1444 |
int32_t len; |
1445 |
uint8_t command; |
1446 |
int rc;
|
1447 |
|
1448 |
command = buf[0];
|
1449 |
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", req->lun, req->tag, buf[0]); |
1450 |
|
1451 |
#ifdef DEBUG_SCSI
|
1452 |
{ |
1453 |
int i;
|
1454 |
for (i = 1; i < r->req.cmd.len; i++) { |
1455 |
printf(" 0x%02x", buf[i]);
|
1456 |
} |
1457 |
printf("\n");
|
1458 |
} |
1459 |
#endif
|
1460 |
|
1461 |
switch (command) {
|
1462 |
case INQUIRY:
|
1463 |
case MODE_SENSE:
|
1464 |
case MODE_SENSE_10:
|
1465 |
case RESERVE:
|
1466 |
case RESERVE_10:
|
1467 |
case RELEASE:
|
1468 |
case RELEASE_10:
|
1469 |
case START_STOP:
|
1470 |
case ALLOW_MEDIUM_REMOVAL:
|
1471 |
case GET_CONFIGURATION:
|
1472 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1473 |
case MECHANISM_STATUS:
|
1474 |
case REQUEST_SENSE:
|
1475 |
break;
|
1476 |
|
1477 |
default:
|
1478 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1479 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1480 |
return 0; |
1481 |
} |
1482 |
break;
|
1483 |
} |
1484 |
|
1485 |
switch (command) {
|
1486 |
case TEST_UNIT_READY:
|
1487 |
case INQUIRY:
|
1488 |
case MODE_SENSE:
|
1489 |
case MODE_SENSE_10:
|
1490 |
case RESERVE:
|
1491 |
case RESERVE_10:
|
1492 |
case RELEASE:
|
1493 |
case RELEASE_10:
|
1494 |
case START_STOP:
|
1495 |
case ALLOW_MEDIUM_REMOVAL:
|
1496 |
case READ_CAPACITY_10:
|
1497 |
case READ_TOC:
|
1498 |
case READ_DVD_STRUCTURE:
|
1499 |
case GET_CONFIGURATION:
|
1500 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1501 |
case MECHANISM_STATUS:
|
1502 |
case SERVICE_ACTION_IN_16:
|
1503 |
case REQUEST_SENSE:
|
1504 |
rc = scsi_disk_emulate_command(r); |
1505 |
if (rc < 0) { |
1506 |
return 0; |
1507 |
} |
1508 |
|
1509 |
r->iov.iov_len = rc; |
1510 |
break;
|
1511 |
case SYNCHRONIZE_CACHE:
|
1512 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1513 |
scsi_req_ref(&r->req); |
1514 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
1515 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_flush_complete, r); |
1516 |
return 0; |
1517 |
case READ_6:
|
1518 |
case READ_10:
|
1519 |
case READ_12:
|
1520 |
case READ_16:
|
1521 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1522 |
DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len); |
1523 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1524 |
goto illegal_lba;
|
1525 |
} |
1526 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1527 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1528 |
break;
|
1529 |
case VERIFY_10:
|
1530 |
case VERIFY_12:
|
1531 |
case VERIFY_16:
|
1532 |
case WRITE_6:
|
1533 |
case WRITE_10:
|
1534 |
case WRITE_12:
|
1535 |
case WRITE_16:
|
1536 |
case WRITE_VERIFY_10:
|
1537 |
case WRITE_VERIFY_12:
|
1538 |
case WRITE_VERIFY_16:
|
1539 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1540 |
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n", |
1541 |
(command & 0xe) == 0xe ? "And Verify " : "", |
1542 |
r->req.cmd.lba, len); |
1543 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1544 |
goto illegal_lba;
|
1545 |
} |
1546 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1547 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1548 |
break;
|
1549 |
case MODE_SELECT:
|
1550 |
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer); |
1551 |
/* We don't support mode parameter changes.
|
1552 |
Allow the mode parameter header + block descriptors only. */
|
1553 |
if (r->req.cmd.xfer > 12) { |
1554 |
goto fail;
|
1555 |
} |
1556 |
break;
|
1557 |
case MODE_SELECT_10:
|
1558 |
DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer); |
1559 |
/* We don't support mode parameter changes.
|
1560 |
Allow the mode parameter header + block descriptors only. */
|
1561 |
if (r->req.cmd.xfer > 16) { |
1562 |
goto fail;
|
1563 |
} |
1564 |
break;
|
1565 |
case SEEK_10:
|
1566 |
DPRINTF("Seek(10) (sector %" PRId64 ")\n", r->req.cmd.lba); |
1567 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1568 |
goto illegal_lba;
|
1569 |
} |
1570 |
break;
|
1571 |
case WRITE_SAME_10:
|
1572 |
len = lduw_be_p(&buf[7]);
|
1573 |
goto write_same;
|
1574 |
case WRITE_SAME_16:
|
1575 |
len = ldl_be_p(&buf[10]) & 0xffffffffULL; |
1576 |
write_same:
|
1577 |
|
1578 |
DPRINTF("WRITE SAME() (sector %" PRId64 ", count %d)\n", |
1579 |
r->req.cmd.lba, len); |
1580 |
|
1581 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1582 |
goto illegal_lba;
|
1583 |
} |
1584 |
|
1585 |
/*
|
1586 |
* We only support WRITE SAME with the unmap bit set for now.
|
1587 |
*/
|
1588 |
if (!(buf[1] & 0x8)) { |
1589 |
goto fail;
|
1590 |
} |
1591 |
|
1592 |
rc = bdrv_discard(s->qdev.conf.bs, |
1593 |
r->req.cmd.lba * (s->qdev.blocksize / 512),
|
1594 |
len * (s->qdev.blocksize / 512));
|
1595 |
if (rc < 0) { |
1596 |
/* XXX: better error code ?*/
|
1597 |
goto fail;
|
1598 |
} |
1599 |
|
1600 |
break;
|
1601 |
default:
|
1602 |
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
1603 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1604 |
return 0; |
1605 |
fail:
|
1606 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1607 |
return 0; |
1608 |
illegal_lba:
|
1609 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1610 |
return 0; |
1611 |
} |
1612 |
if (r->sector_count == 0 && r->iov.iov_len == 0) { |
1613 |
scsi_req_complete(&r->req, GOOD); |
1614 |
} |
1615 |
len = r->sector_count * 512 + r->iov.iov_len;
|
1616 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1617 |
return -len;
|
1618 |
} else {
|
1619 |
if (!r->sector_count) {
|
1620 |
r->sector_count = -1;
|
1621 |
} |
1622 |
return len;
|
1623 |
} |
1624 |
} |
1625 |
|
1626 |
static void scsi_disk_reset(DeviceState *dev) |
1627 |
{ |
1628 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev); |
1629 |
uint64_t nb_sectors; |
1630 |
|
1631 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET)); |
1632 |
|
1633 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1634 |
nb_sectors /= s->qdev.blocksize / 512;
|
1635 |
if (nb_sectors) {
|
1636 |
nb_sectors--; |
1637 |
} |
1638 |
s->qdev.max_lba = nb_sectors; |
1639 |
} |
1640 |
|
1641 |
static void scsi_destroy(SCSIDevice *dev) |
1642 |
{ |
1643 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1644 |
|
1645 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE)); |
1646 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
1647 |
} |
1648 |
|
1649 |
static void scsi_cd_change_media_cb(void *opaque, bool load) |
1650 |
{ |
1651 |
SCSIDiskState *s = opaque; |
1652 |
|
1653 |
/*
|
1654 |
* When a CD gets changed, we have to report an ejected state and
|
1655 |
* then a loaded state to guests so that they detect tray
|
1656 |
* open/close and media change events. Guests that do not use
|
1657 |
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
1658 |
* states rely on this behavior.
|
1659 |
*
|
1660 |
* media_changed governs the state machine used for unit attention
|
1661 |
* report. media_event is used by GET EVENT STATUS NOTIFICATION.
|
1662 |
*/
|
1663 |
s->media_changed = load; |
1664 |
s->tray_open = !load; |
1665 |
s->qdev.unit_attention = SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM); |
1666 |
s->media_event = true;
|
1667 |
s->eject_request = false;
|
1668 |
} |
1669 |
|
1670 |
static void scsi_cd_eject_request_cb(void *opaque, bool force) |
1671 |
{ |
1672 |
SCSIDiskState *s = opaque; |
1673 |
|
1674 |
s->eject_request = true;
|
1675 |
if (force) {
|
1676 |
s->tray_locked = false;
|
1677 |
} |
1678 |
} |
1679 |
|
1680 |
static bool scsi_cd_is_tray_open(void *opaque) |
1681 |
{ |
1682 |
return ((SCSIDiskState *)opaque)->tray_open;
|
1683 |
} |
1684 |
|
1685 |
static bool scsi_cd_is_medium_locked(void *opaque) |
1686 |
{ |
1687 |
return ((SCSIDiskState *)opaque)->tray_locked;
|
1688 |
} |
1689 |
|
1690 |
static const BlockDevOps scsi_cd_block_ops = { |
1691 |
.change_media_cb = scsi_cd_change_media_cb, |
1692 |
.eject_request_cb = scsi_cd_eject_request_cb, |
1693 |
.is_tray_open = scsi_cd_is_tray_open, |
1694 |
.is_medium_locked = scsi_cd_is_medium_locked, |
1695 |
}; |
1696 |
|
1697 |
static void scsi_disk_unit_attention_reported(SCSIDevice *dev) |
1698 |
{ |
1699 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1700 |
if (s->media_changed) {
|
1701 |
s->media_changed = false;
|
1702 |
s->qdev.unit_attention = SENSE_CODE(MEDIUM_CHANGED); |
1703 |
} |
1704 |
} |
1705 |
|
1706 |
static int scsi_initfn(SCSIDevice *dev) |
1707 |
{ |
1708 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1709 |
DriveInfo *dinfo; |
1710 |
|
1711 |
if (!s->qdev.conf.bs) {
|
1712 |
error_report("drive property not set");
|
1713 |
return -1; |
1714 |
} |
1715 |
|
1716 |
if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) && |
1717 |
!bdrv_is_inserted(s->qdev.conf.bs)) { |
1718 |
error_report("Device needs media, but drive is empty");
|
1719 |
return -1; |
1720 |
} |
1721 |
|
1722 |
if (!s->serial) {
|
1723 |
/* try to fall back to value set with legacy -drive serial=... */
|
1724 |
dinfo = drive_get_by_blockdev(s->qdev.conf.bs); |
1725 |
if (*dinfo->serial) {
|
1726 |
s->serial = g_strdup(dinfo->serial); |
1727 |
} |
1728 |
} |
1729 |
|
1730 |
if (!s->version) {
|
1731 |
s->version = g_strdup(QEMU_VERSION); |
1732 |
} |
1733 |
|
1734 |
if (bdrv_is_sg(s->qdev.conf.bs)) {
|
1735 |
error_report("unwanted /dev/sg*");
|
1736 |
return -1; |
1737 |
} |
1738 |
|
1739 |
if (s->features & (1 << SCSI_DISK_F_REMOVABLE)) { |
1740 |
bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_cd_block_ops, s); |
1741 |
} |
1742 |
bdrv_set_buffer_alignment(s->qdev.conf.bs, s->qdev.blocksize); |
1743 |
|
1744 |
bdrv_iostatus_enable(s->qdev.conf.bs); |
1745 |
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, NULL);
|
1746 |
return 0; |
1747 |
} |
1748 |
|
1749 |
static int scsi_hd_initfn(SCSIDevice *dev) |
1750 |
{ |
1751 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1752 |
s->qdev.blocksize = s->qdev.conf.logical_block_size; |
1753 |
s->qdev.type = TYPE_DISK; |
1754 |
return scsi_initfn(&s->qdev);
|
1755 |
} |
1756 |
|
1757 |
static int scsi_cd_initfn(SCSIDevice *dev) |
1758 |
{ |
1759 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1760 |
s->qdev.blocksize = 2048;
|
1761 |
s->qdev.type = TYPE_ROM; |
1762 |
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
1763 |
return scsi_initfn(&s->qdev);
|
1764 |
} |
1765 |
|
1766 |
static int scsi_disk_initfn(SCSIDevice *dev) |
1767 |
{ |
1768 |
DriveInfo *dinfo; |
1769 |
|
1770 |
if (!dev->conf.bs) {
|
1771 |
return scsi_initfn(dev); /* ... and die there */ |
1772 |
} |
1773 |
|
1774 |
dinfo = drive_get_by_blockdev(dev->conf.bs); |
1775 |
if (dinfo->media_cd) {
|
1776 |
return scsi_cd_initfn(dev);
|
1777 |
} else {
|
1778 |
return scsi_hd_initfn(dev);
|
1779 |
} |
1780 |
} |
1781 |
|
1782 |
static const SCSIReqOps scsi_disk_reqops = { |
1783 |
.size = sizeof(SCSIDiskReq),
|
1784 |
.free_req = scsi_free_request, |
1785 |
.send_command = scsi_send_command, |
1786 |
.read_data = scsi_read_data, |
1787 |
.write_data = scsi_write_data, |
1788 |
.cancel_io = scsi_cancel_io, |
1789 |
.get_buf = scsi_get_buf, |
1790 |
.load_request = scsi_disk_load_request, |
1791 |
.save_request = scsi_disk_save_request, |
1792 |
}; |
1793 |
|
1794 |
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
|
1795 |
uint8_t *buf, void *hba_private)
|
1796 |
{ |
1797 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
1798 |
SCSIRequest *req; |
1799 |
|
1800 |
req = scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun, hba_private); |
1801 |
return req;
|
1802 |
} |
1803 |
|
1804 |
#ifdef __linux__
|
1805 |
static int get_device_type(SCSIDiskState *s) |
1806 |
{ |
1807 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
1808 |
uint8_t cmd[16];
|
1809 |
uint8_t buf[36];
|
1810 |
uint8_t sensebuf[8];
|
1811 |
sg_io_hdr_t io_header; |
1812 |
int ret;
|
1813 |
|
1814 |
memset(cmd, 0, sizeof(cmd)); |
1815 |
memset(buf, 0, sizeof(buf)); |
1816 |
cmd[0] = INQUIRY;
|
1817 |
cmd[4] = sizeof(buf); |
1818 |
|
1819 |
memset(&io_header, 0, sizeof(io_header)); |
1820 |
io_header.interface_id = 'S';
|
1821 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
1822 |
io_header.dxfer_len = sizeof(buf);
|
1823 |
io_header.dxferp = buf; |
1824 |
io_header.cmdp = cmd; |
1825 |
io_header.cmd_len = sizeof(cmd);
|
1826 |
io_header.mx_sb_len = sizeof(sensebuf);
|
1827 |
io_header.sbp = sensebuf; |
1828 |
io_header.timeout = 6000; /* XXX */ |
1829 |
|
1830 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
1831 |
if (ret < 0 || io_header.driver_status || io_header.host_status) { |
1832 |
return -1; |
1833 |
} |
1834 |
s->qdev.type = buf[0];
|
1835 |
if (buf[1] & 0x80) { |
1836 |
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
1837 |
} |
1838 |
return 0; |
1839 |
} |
1840 |
|
1841 |
static int scsi_block_initfn(SCSIDevice *dev) |
1842 |
{ |
1843 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1844 |
int sg_version;
|
1845 |
int rc;
|
1846 |
|
1847 |
if (!s->qdev.conf.bs) {
|
1848 |
error_report("scsi-block: drive property not set");
|
1849 |
return -1; |
1850 |
} |
1851 |
|
1852 |
/* check we are using a driver managing SG_IO (version 3 and after) */
|
1853 |
if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
1854 |
sg_version < 30000) {
|
1855 |
error_report("scsi-block: scsi generic interface too old");
|
1856 |
return -1; |
1857 |
} |
1858 |
|
1859 |
/* get device type from INQUIRY data */
|
1860 |
rc = get_device_type(s); |
1861 |
if (rc < 0) { |
1862 |
error_report("scsi-block: INQUIRY failed");
|
1863 |
return -1; |
1864 |
} |
1865 |
|
1866 |
/* Make a guess for the block size, we'll fix it when the guest sends.
|
1867 |
* READ CAPACITY. If they don't, they likely would assume these sizes
|
1868 |
* anyway. (TODO: check in /sys).
|
1869 |
*/
|
1870 |
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
|
1871 |
s->qdev.blocksize = 2048;
|
1872 |
} else {
|
1873 |
s->qdev.blocksize = 512;
|
1874 |
} |
1875 |
return scsi_initfn(&s->qdev);
|
1876 |
} |
1877 |
|
1878 |
static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
|
1879 |
uint32_t lun, uint8_t *buf, |
1880 |
void *hba_private)
|
1881 |
{ |
1882 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
1883 |
|
1884 |
switch (buf[0]) { |
1885 |
case READ_6:
|
1886 |
case READ_10:
|
1887 |
case READ_12:
|
1888 |
case READ_16:
|
1889 |
case VERIFY_10:
|
1890 |
case VERIFY_12:
|
1891 |
case VERIFY_16:
|
1892 |
case WRITE_6:
|
1893 |
case WRITE_10:
|
1894 |
case WRITE_12:
|
1895 |
case WRITE_16:
|
1896 |
case WRITE_VERIFY_10:
|
1897 |
case WRITE_VERIFY_12:
|
1898 |
case WRITE_VERIFY_16:
|
1899 |
/* If we are not using O_DIRECT, we might read stale data from the
|
1900 |
* host cache if writes were made using other commands than these
|
1901 |
* ones (such as WRITE SAME or EXTENDED COPY, etc.). So, without
|
1902 |
* O_DIRECT everything must go through SG_IO.
|
1903 |
*/
|
1904 |
if (!(s->qdev.conf.bs->open_flags & BDRV_O_NOCACHE)) {
|
1905 |
break;
|
1906 |
} |
1907 |
|
1908 |
/* MMC writing cannot be done via pread/pwrite, because it sometimes
|
1909 |
* involves writing beyond the maximum LBA or to negative LBA (lead-in).
|
1910 |
* And once you do these writes, reading from the block device is
|
1911 |
* unreliable, too. It is even possible that reads deliver random data
|
1912 |
* from the host page cache (this is probably a Linux bug).
|
1913 |
*
|
1914 |
* We might use scsi_disk_reqops as long as no writing commands are
|
1915 |
* seen, but performance usually isn't paramount on optical media. So,
|
1916 |
* just make scsi-block operate the same as scsi-generic for them.
|
1917 |
*/
|
1918 |
if (s->qdev.type == TYPE_ROM) {
|
1919 |
break;
|
1920 |
} |
1921 |
return scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun,
|
1922 |
hba_private); |
1923 |
} |
1924 |
|
1925 |
return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
|
1926 |
hba_private); |
1927 |
} |
1928 |
#endif
|
1929 |
|
1930 |
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
1931 |
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \ |
1932 |
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
1933 |
DEFINE_PROP_STRING("serial", SCSIDiskState, serial)
|
1934 |
|
1935 |
static Property scsi_hd_properties[] = {
|
1936 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1937 |
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
1938 |
SCSI_DISK_F_REMOVABLE, false),
|
1939 |
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
1940 |
SCSI_DISK_F_DPOFUA, false),
|
1941 |
DEFINE_PROP_END_OF_LIST(), |
1942 |
}; |
1943 |
|
1944 |
static const VMStateDescription vmstate_scsi_disk_state = { |
1945 |
.name = "scsi-disk",
|
1946 |
.version_id = 1,
|
1947 |
.minimum_version_id = 1,
|
1948 |
.minimum_version_id_old = 1,
|
1949 |
.fields = (VMStateField[]) { |
1950 |
VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState), |
1951 |
VMSTATE_BOOL(media_changed, SCSIDiskState), |
1952 |
VMSTATE_BOOL(media_event, SCSIDiskState), |
1953 |
VMSTATE_BOOL(eject_request, SCSIDiskState), |
1954 |
VMSTATE_BOOL(tray_open, SCSIDiskState), |
1955 |
VMSTATE_BOOL(tray_locked, SCSIDiskState), |
1956 |
VMSTATE_END_OF_LIST() |
1957 |
} |
1958 |
}; |
1959 |
|
1960 |
static void scsi_hd_class_initfn(ObjectClass *klass, void *data) |
1961 |
{ |
1962 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1963 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
1964 |
|
1965 |
sc->init = scsi_hd_initfn; |
1966 |
sc->destroy = scsi_destroy; |
1967 |
sc->alloc_req = scsi_new_request; |
1968 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
1969 |
dc->fw_name = "disk";
|
1970 |
dc->desc = "virtual SCSI disk";
|
1971 |
dc->reset = scsi_disk_reset; |
1972 |
dc->props = scsi_hd_properties; |
1973 |
dc->vmsd = &vmstate_scsi_disk_state; |
1974 |
} |
1975 |
|
1976 |
static TypeInfo scsi_hd_info = {
|
1977 |
.name = "scsi-hd",
|
1978 |
.parent = TYPE_SCSI_DEVICE, |
1979 |
.instance_size = sizeof(SCSIDiskState),
|
1980 |
.class_init = scsi_hd_class_initfn, |
1981 |
}; |
1982 |
|
1983 |
static Property scsi_cd_properties[] = {
|
1984 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1985 |
DEFINE_PROP_END_OF_LIST(), |
1986 |
}; |
1987 |
|
1988 |
static void scsi_cd_class_initfn(ObjectClass *klass, void *data) |
1989 |
{ |
1990 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1991 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
1992 |
|
1993 |
sc->init = scsi_cd_initfn; |
1994 |
sc->destroy = scsi_destroy; |
1995 |
sc->alloc_req = scsi_new_request; |
1996 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
1997 |
dc->fw_name = "disk";
|
1998 |
dc->desc = "virtual SCSI CD-ROM";
|
1999 |
dc->reset = scsi_disk_reset; |
2000 |
dc->props = scsi_cd_properties; |
2001 |
dc->vmsd = &vmstate_scsi_disk_state; |
2002 |
} |
2003 |
|
2004 |
static TypeInfo scsi_cd_info = {
|
2005 |
.name = "scsi-cd",
|
2006 |
.parent = TYPE_SCSI_DEVICE, |
2007 |
.instance_size = sizeof(SCSIDiskState),
|
2008 |
.class_init = scsi_cd_class_initfn, |
2009 |
}; |
2010 |
|
2011 |
#ifdef __linux__
|
2012 |
static Property scsi_block_properties[] = {
|
2013 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2014 |
DEFINE_PROP_END_OF_LIST(), |
2015 |
}; |
2016 |
|
2017 |
static void scsi_block_class_initfn(ObjectClass *klass, void *data) |
2018 |
{ |
2019 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2020 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2021 |
|
2022 |
sc->init = scsi_block_initfn; |
2023 |
sc->destroy = scsi_destroy; |
2024 |
sc->alloc_req = scsi_block_new_request; |
2025 |
dc->fw_name = "disk";
|
2026 |
dc->desc = "SCSI block device passthrough";
|
2027 |
dc->reset = scsi_disk_reset; |
2028 |
dc->props = scsi_block_properties; |
2029 |
dc->vmsd = &vmstate_scsi_disk_state; |
2030 |
} |
2031 |
|
2032 |
static TypeInfo scsi_block_info = {
|
2033 |
.name = "scsi-block",
|
2034 |
.parent = TYPE_SCSI_DEVICE, |
2035 |
.instance_size = sizeof(SCSIDiskState),
|
2036 |
.class_init = scsi_block_class_initfn, |
2037 |
}; |
2038 |
#endif
|
2039 |
|
2040 |
static Property scsi_disk_properties[] = {
|
2041 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2042 |
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
2043 |
SCSI_DISK_F_REMOVABLE, false),
|
2044 |
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
2045 |
SCSI_DISK_F_DPOFUA, false),
|
2046 |
DEFINE_PROP_END_OF_LIST(), |
2047 |
}; |
2048 |
|
2049 |
static void scsi_disk_class_initfn(ObjectClass *klass, void *data) |
2050 |
{ |
2051 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2052 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2053 |
|
2054 |
sc->init = scsi_disk_initfn; |
2055 |
sc->destroy = scsi_destroy; |
2056 |
sc->alloc_req = scsi_new_request; |
2057 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
2058 |
dc->fw_name = "disk";
|
2059 |
dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
|
2060 |
dc->reset = scsi_disk_reset; |
2061 |
dc->props = scsi_disk_properties; |
2062 |
dc->vmsd = &vmstate_scsi_disk_state; |
2063 |
} |
2064 |
|
2065 |
static TypeInfo scsi_disk_info = {
|
2066 |
.name = "scsi-disk",
|
2067 |
.parent = TYPE_SCSI_DEVICE, |
2068 |
.instance_size = sizeof(SCSIDiskState),
|
2069 |
.class_init = scsi_disk_class_initfn, |
2070 |
}; |
2071 |
|
2072 |
static void scsi_disk_register_types(void) |
2073 |
{ |
2074 |
type_register_static(&scsi_hd_info); |
2075 |
type_register_static(&scsi_cd_info); |
2076 |
#ifdef __linux__
|
2077 |
type_register_static(&scsi_block_info); |
2078 |
#endif
|
2079 |
type_register_static(&scsi_disk_info); |
2080 |
} |
2081 |
|
2082 |
type_init(scsi_disk_register_types) |